1. One-Stop Solution in Device Networking
SENA
One-Stop Solution in Device Networking
The VTS series,
Versatile Console Management Server
February, 2003
March, 2002

2. Contents Backgrounds VTS Overview VTS Technical Specification
VTS Features
Using the VTS and the applications
User Benefits
VTS Reference
Embedded
Connectivity

3. Backgrounds Pros Cons Main frame computers Large centralized system
Poor Internet infrastructure
Simple systems
Scalability
High-availability
Lower Costs
Flexibility
Pros
Cons
Numerous nodes to manage
Numerous types of the equipments to manage
Clustering/Downsizing/Server farms
Small decentralized system
Daily-growing Internet infrastructure
Complex systems: Various passages to Internet such as wired, wireless, mobile and fiber
Various equipments in network infra
UPS, Environmental controllers

4. Backgrounds COM/Console/AUX port of the equipments
Systematic network management solution required!
Common external interface for the equipments is
COM/Console/AUX port of the equipments
Network: Server, Router, Bridge, Repeator, Switch
Teleco: DSU/CSU, FLC, PBX, Media converters
Power: UPS, Power Distribution Unit
Controller: HVAC, Temperature control
Remote Integrated Management
over various equipments
by using Console interface

5. VTS Overview Who need VTS? When is it useful? Applications
IT professionals, Network administrators/managers
When is it useful?
Server crashes
Equipments is malfunctioning
Network is down
And more
Applications
Remote management of the IT/Telco equipments
Management of various equipments in IDC (Internet Data Center)
Management of co-location equipments
Server farm

6. VTS Overview Remote management over IT/TELCO devices User Interface
In-band access: LAN or Wireless LAN
Out-of-band access: dial-in access or broadband Internet access (ADSL/Cable)
User Interface
Intuitive Menu-driven console interface (System console/telnet/Web)
Linux Command-driven interface (Serial console/telnet)
Port functions
Port buffering (memory/ATA Flash) and Port sniffing
Multiple JTA support on web
PC Card support
ATA Flash card for the storage
LAN/WiFi/PSTN modem for the access
Security support
Authentication: SSH v1&v2, RADIUS, LDAP, TACACS+, (Kerberos)
User-level management: admin, port admin, user
IP filtering

7. Out-of-band management:
VTS Overview
                                                                                                         
RS232
console port connection
Console port of the VTS
In-band management : 10/100 Base-TX
Out-of-band management:
ADSL/Cable
PCMCIA interface
In-band management : Wireless LAN (802.11b) card
Out-of-band management: PSTN/CDMA modem card
Port buffering and configuration storage : ATA Flash card support

8. VTS Overview : Concept

9. VTS Overview : Web interface

10. VTS Technical Specification
Embedded
Connectivity

11. VTS Technical Specification
Embedded
Connectivity

12. VTS Technical Specification: PC Card support
Ethernet
ATA Flash
Wireless LAN
Modem
Embedded
Connectivity

13. VTS Features & Benefits
Various Out-of-Band management support
PCMCIA interface
Wireless LAN, PSTN Modem, CDMA Modem
Protocols for directly connecting to Broadband Internet
ADSL/Cable
Secure management support
Security
SSH (Secure Shell) v2
RADIUS accounting & authentication
IP-based packet filtering for preventing unauthorized access
Flexibility
Various combination of the system using PCMCIA support
e.g. ATA flash card with out-of-band management using ADSL
CDMA and LAN, PSTN and LAN, PSTN and ADSL/CATV and more
Price
Competitive price per port

14. Using the VTS and the application
Console server mode
Access the VTS serial port remotely using SSH/Telnet/Raw TCP
VTS: ( )
Port: (6001~6032) or ~132
Out-of-Band
In-Band
Dial-in
Remote PC
Network
Internet
Telnet/SSH
Wireless LAN
Admin PC
Remote PC
Admin PC

15. Using the VTS and the application
Port data logging
NFS server or SYSLOG server
Buffer size :
Up to 3200KB in total
System Memory
Buffer size depends the server system
Data stream
Storage (ATA Flash card)
Buffer size depends the memory space of the card
Serial port
Serial port

16. Using the VTS and the application
Sniff mode
The VTS supports multiple users’ access over the serial port (sniff mode)
Sniff users’ right
Disconnect the session and make a main connection
Sniff data stream as an observer

17. Using the VTS and the application
User authentication in access the serial port
Local, RADIUS, LDAP, TACACS+, Kerberos

18. Using the VTS and the application
Master/Slave clustering
One Master VTS can access Max. 16 Slave VTSs
Manage up to 544 serial port per Master

19. Using the VTS and the application
Flash memory card configuration

20. Using the VTS and the application
User Management

21. Using the VTS and the application
VTS CLI
What is CLI?
Linux console (console, telnet/SSH)
Who can access the CLI?
Root user : All R/W
Admin user: Read-Only
What users can do thru CLI?
Edit VTS, Linux kernel configuration files
Run Linux command
Edit/Run Linux shell script
Run user program

22. Using the VTS and the application
VTS utilities:
Editconf, saveconf, applyconf
Shell & shell utilities:
sh ash bash echo env false grep more sed which pwd
File and disk utils:
ls cp mv rm mkdir rmdir ln mknod chmod touch sync
gunzip gzip zcat tar dd df du find cat vi tail
mkdosfs mke2fs e2fsck fsck mount umount
System utilities:
date free hostname sleep stty uname reset
insmod rmmod lsmod modprobe
kill killall ps halt shutdown poweroff reboot telinit init
useradd userdel usermod whoami who passwd id su
Network utilities:
ifconfig iptables route telnet ftp ssh ping

23. User Benefits Maximize network efficiency & productivity
Remote Integrated Management over various equipments
Systematic approach
Always On-Line Management
Logging equipments’ messages to memeory
Delivery of equipments’ alarm messages by
Delivery of the VTS log messages to syslog server or to NFS
Consistent management interface
Helps to forecast the problems by making various statistics data from the equipments’ log data
Reduce network down-time and Maximize network on-time
Reduce the total cost for the maintenance
Simplifies the maintenance by providing consistent management interface
Easier troubleshooting

24. User Benefits ROI(Return On Investment) calculation factor
User environment
Network Devices
Server or the devices need to be managed
Cost:
Device Down Frequency/month
Average Up-time
Maintenance Labor cost
Number of the employee, percentage of the employee affected by the network down
Investment
VTS unit for 32 devices
Result evaluation
Reduced network Down-time
Productivity of the employee work
Sales increase due to the improved network Up-time (On-line shopping mall)

25. VTS Reference : Raw TCP VTS Raw TCP mode and COM-port redirector
User application
(Serial Communication)
COM-Port redirector
(Virtual serial port driver,
Serial-TCP/IP conversion)
TCP/IP, Ethernet
Management PC
Ethernet
TCP/IP
COM11 : serial port on the PC
Serial Console port
HelloDevice VCOM
Redirects COM11 data to the IP,
KT(Korea Telecommunication)
DSU/CSU management
IT/TELCO equipments